期刊
ANALYTICAL METHODS
卷 5, 期 11, 页码 2809-2815出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ay40207j
关键词
-
资金
- National Natural Science Foundation of China [31171698]
- Natural Science Foundation of Hebei Province [B2012204028]
A novel graphene grafted silica-coated Fe3O4 (Fe3O4@SiO2-G) was synthesized and used as an efficient magnetic solid-phase extraction adsorbent for the simultaneous extraction of four neonicotinoid pesticides (thiamethoxam, imidacloprid, acetamiprid and thiacloprid) from pear and tomato samples followed by high performance liquid chromatography-diode array detection. After extraction, the adsorbent could be conveniently separated from the sample solution by an external magnetic field. The main experimental parameters affecting the extraction efficiency were investigated in detail. Under the optimum conditions, a rapid and effective determination of the neonicotinoid pesticides in pear and tomato samples was achieved. The limits of detection (S/N = 3) of the method for the neonicotinoids ranged from 0.08 to 0.15 ng g(-1). Good linearity and reproducibility were obtained. The recoveries of the method were in the range from 93.1% to 107.4%.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据